panel_letter: Add a large panel letter to the top left of the panel

In OchoaLab/ochoalabtools: Handy plotting and other tools for scientific publications

Add a large panel letter to the top left of the panel

Description

This is a wrapper around graphics::mtext() with useful default values for this setting. See that function for more details. Panel letters are placed as if they were titles (preserves side = 3 hardcoded default).

Usage

panel_letter(letter, cex = 1.5, line = 0.5, adj = -0.1)

Arguments

letter	The letter to display. Mandatory, will stop if missing.
cex	The character expansion factor (default 1.5 makes it larger than the ordinary title, to distinguish them clearly if also present).
line	The margin line where the text is placed (default 0.5 matches the title line default in fig_start()).
adj	The text adjustment in the reading direction (default -0.1 is slightly to the left of the plotting area, over the left margin). Might need to be adjusted depending on margins. It is a copy of an internal function in popkin, where it is used by plot_popkin when there are multiple panels.

Examples

# create a plot area
plot(1:10)
# run this after the plot area has been created...
panel_letter('A')

OchoaLab/ochoalabtools documentation built on July 28, 2024, 12:37 p.m.